| 摘要 |
PROBLEM TO BE SOLVED: To check the quality of picture and adjust the luminance simply and accurately. SOLUTION: Image data 25 for testing is stored in a C-GROM 22 of a variable display 12 together with a character image data 23 displayed on a pachinko game. When receiving an image display command for testing, a CPU 16 reads the image data 25 for testing out of the C-GROM displays the data 25 on a liquid crystal color display panel 28 through a VDP 24. Prepared as test image for the image data for testing are solid screens of three RGB primary colors and black and white, a gray scale in which luminance is gradually horizontally varied from black to white in 16 gradations and a color luminance pattern in which the luminance of three RBG primary colors individually displayed on three portions of a screen is gradually varied vertically in 16 gradations. The gradations are gradually displayed in the gray scale and the color luminance pattern and can be a reference of the luminance by comparison thereof. This enables checking of the quality of picture and adjusting of the luminance simply and accurately. |
